diff --git a/account.py b/account.py
index bf950bab10..2f3a560ae3 100644
--- a/account.py
+++ b/account.py
@@ -9,7 +9,7 @@ from sql import Column, Null, Window, Literal
 from sql.aggregate import Sum, Max
 from sql.conditionals import Coalesce, Case
 
-from trytond.model import ModelView, ModelSQL, fields, Unique
+from trytond.model import ModelView, ModelSQL, fields, Unique, sequence_ordered
 from trytond.wizard import Wizard, StateView, StateAction, StateTransition, \
     Button
 from trytond.report import Report
@@ -38,7 +38,7 @@ def inactive_records(func):
     return wrapper
 
 
-class TypeTemplate(ModelSQL, ModelView):
+class TypeTemplate(sequence_ordered(), ModelSQL, ModelView):
     'Account Type Template'
     __name__ = 'account.account.type.template'
     name = fields.Char('Name', required=True)
@@ -46,7 +46,6 @@ class TypeTemplate(ModelSQL, ModelView):
             ondelete="RESTRICT")
     childs = fields.One2Many('account.account.type.template', 'parent',
         'Children')
-    sequence = fields.Integer('Sequence')
     balance_sheet = fields.Boolean('Balance Sheet')
     income_statement = fields.Boolean('Income Statement')
     display_balance = fields.Selection([
@@ -54,11 +53,6 @@ class TypeTemplate(ModelSQL, ModelView):
         ('credit-debit', 'Credit - Debit'),
         ], 'Display Balance', required=True)
 
-    @classmethod
-    def __setup__(cls):
-        super(TypeTemplate, cls).__setup__()
-        cls._order.insert(0, ('sequence', 'ASC'))
-
     @classmethod
     def __register__(cls, module_name):
         TableHandler = backend.get('TableHandler')
@@ -74,11 +68,6 @@ class TypeTemplate(ModelSQL, ModelView):
         super(TypeTemplate, cls).validate(records)
         cls.check_recursion(records, rec_name='name')
 
-    @staticmethod
-    def order_sequence(tables):
-        table, _ = tables[None]
-        return [Case((table.sequence == Null, 0), else_=1), table.sequence]
-
     @staticmethod
     def default_balance_sheet():
         return False
@@ -154,7 +143,7 @@ class TypeTemplate(ModelSQL, ModelView):
             childs = sum((c.childs for c in childs), ())
 
 
-class Type(ModelSQL, ModelView):
+class Type(sequence_ordered(), ModelSQL, ModelView):
     'Account Type'
     __name__ = 'account.account.type'
     name = fields.Char('Name', size=None, required=True)
@@ -166,8 +155,6 @@ class Type(ModelSQL, ModelView):
         domain=[
             ('company', '=', Eval('company')),
         ], depends=['company'])
-    sequence = fields.Integer('Sequence',
-        help='Use to order the account type')
     currency_digits = fields.Function(fields.Integer('Currency Digits'),
             'get_currency_digits')
     amount = fields.Function(fields.Numeric('Amount',
@@ -186,11 +173,6 @@ class Type(ModelSQL, ModelView):
             ondelete="RESTRICT")
     template = fields.Many2One('account.account.type.template', 'Template')
 
-    @classmethod
-    def __setup__(cls):
-        super(Type, cls).__setup__()
-        cls._order.insert(0, ('sequence', 'ASC'))
-
     @classmethod
     def __register__(cls, module_name):
         TableHandler = backend.get('TableHandler')
@@ -206,11 +188,6 @@ class Type(ModelSQL, ModelView):
         super(Type, cls).validate(types)
         cls.check_recursion(types, rec_name='name')
 
-    @staticmethod
-    def order_sequence(tables):
-        table, _ = tables[None]
-        return [Case((table.sequence == Null, 0), else_=1), table.sequence]
-
     @staticmethod
     def default_balance_sheet():
         return False
diff --git a/configuration.py b/configuration.py
index 75690890d0..9c8357c860 100644
--- a/configuration.py
+++ b/configuration.py
@@ -1,10 +1,7 @@
 # This file is part of Tryton.  The COPYRIGHT file at the top level of
 # this repository contains the full copyright notices and license terms.
-from sql import Null
-from sql.conditionals import Case
-
 from trytond.model import (ModelView, ModelSQL,
-            ModelSingleton, MatchMixin, fields)
+            ModelSingleton, MatchMixin, fields, sequence_ordered)
 from trytond.pool import Pool
 from trytond.transaction import Transaction
 from trytond.pyson import Eval
@@ -101,25 +98,15 @@ class Configuration(ModelSingleton, ModelSQL, ModelView):
         return self.default_tax_rounding()
 
 
-class ConfigurationTaxRounding(ModelSQL, ModelView, MatchMixin):
+class ConfigurationTaxRounding(
+        sequence_ordered(), ModelSQL, ModelView, MatchMixin):
     'Account Configuration Tax Rounding'
     __name__ = 'account.configuration.tax_rounding'
     configuration = fields.Many2One('account.configuration', 'Configuration',
         required=True, ondelete='CASCADE')
-    sequence = fields.Integer('Sequence')
     company = fields.Many2One('company.company', 'Company')
     method = fields.Selection(tax_roundings, 'Method', required=True)
 
-    @classmethod
-    def __setup__(cls):
-        super(ConfigurationTaxRounding, cls).__setup__()
-        cls._order.insert(0, ('sequence', 'ASC'))
-
-    @classmethod
-    def order_sequence(cls, tables):
-        table, _ = tables[None]
-        return [Case((table.sequence == Null, 0), else_=1), table.sequence]
-
     @classmethod
     def default_method(cls):
         return 'document'